Jul 12, 2010 - Among U.S. high school students, the rates of those who had ever smoked cigarettes, those who were current users of cigarettes, and those who were current frequent users of cigarettes began to decline in the late 1990s, with a more gradual decline from 2003 to 2009, according to data published in the July 9 issue of the U.S. Centers for Disease Control and Prevention's Morbidity and Mortality Weekly Report.